A woman and a man are both heterozygous for a recessive allele for a rare genetic disease. If they have one child, what is the probability that he or she will be affected? If they have two children, what is the probability that at least one of them will be affected?
A)7/16, 1/4
B)1/4, 3/4
C)3/4, 1/4
D)3/4, 7/16
E)1/4, 7/16

Question

Quizplus · Accepted Answer

The probability that one child will be affected is 1/4. The probability that at least one of two children will be affected is 7/16.

A Woman and a Man Are Both Heterozygous for a Recessive